Elevator door knife door lock device

Abstract

The invention belongs to the technical field of elevators, and provides an elevator door knife door lock device which comprises a door knife mechanism, a lock catch mechanism and an emergency unlocking mechanism. The door knife mechanism is arranged on the car door upper sill; the lock catch mechanism comprises a lock plate and a lock bar, the lock plate is installed on the transversely-moving belt, and the lock bar is rotationally connected with the lock plate; the lock plate can drive the tail end of the lock bar to abut against the door knife mechanism in the moving process till the lock bar is tilted and unlocked. The emergency unlocking mechanism comprises a connecting rod; the connecting rod is arranged above the door knife mechanism and the locking bar, and the two ends of the connecting rod can be matched with the door knife mechanism and the lock catch mechanism. The connecting rod and the door knife mechanism are separated, and the connecting rod and the door knife mechanism are not in contact in a normal working state, so that noise caused by collision is avoided, the noise generated in the normal working state is reduced, and the comfort of passengers taking an elevator is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of elevators, and in particular relates to an elevator door knife door lock device. Background Art

[0002] Conventional elevator car door locks often have the door knife and door lock integrated. When the left and right and front and back positions of the door knife need to be adjusted, the switch on the lock hook will be moved, and the meshing gap between the lock hook and the lock seat will also change, causing the door lock to need to be adjusted, i.e., two adjustments. At the same time, the connecting rod and the door knife mechanism are rigidly connected. During each door opening and closing process, the connecting rod swings greatly with the door knife mechanism, which may cause failures and loud noises, affecting the riding experience. Summary of the invention

[0003] In order to overcome the problems existing in the prior art, the object of the present invention is to provide an elevator door knife door lock device.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] An elevator door knife door lock device comprises: a door knife mechanism, a lock mechanism and an emergency unlocking mechanism; the door knife mechanism is installed on the upper sill of the car door and can provide a lateral driving force; the lock mechanism comprises a lock plate and a lock bar, the lock plate is installed on the door hanging plate and is connected to a belt that moves laterally, and the lock bar is rotatably connected to the lock plate; during the movement of the lock plate and the door knife mechanism, the end of the lock bar can be driven to approach the door knife mechanism until the lock bar is tilted and unlocked; the emergency unlocking mechanism comprises a connecting rod; the connecting rod is arranged above the door knife mechanism and the lock bar, and the two ends of the connecting rod are respectively a first end and a second end; the first end is provided with a first connecting member interconnected with the door knife mechanism, the door knife mechanism is provided with a second connecting member that cooperates with the first connecting member, and the door knife mechanism can make the first connecting member and the second connecting member cooperate by moving toward the connecting rod; the second end is provided with a third connecting member that can pull the end of the lock bar.

[0006] Its main working principle is that under normal working conditions, if the lock mechanism needs to be unlocked, it only needs to pull the lock plate with the belt to move, and the door knife mechanism also moves to the side of the floor door to make contact. The contact reaction force causes the stop rod of the door knife mechanism to move, and since the lock bar and the stop rod of the door knife mechanism are tightly matched, the lock bar will also be lifted up and unlocked; when in an emergency state, the lock mechanism cannot be opened by itself, and the key is inserted into the linkage assembly from the outside, and the key is turned to drive the linkage assembly to lift the other stop rod of the door knife mechanism upward, and the second connecting piece on the door knife mechanism and the first connecting piece of the connecting rod are engaged with each other. As the linkage assembly on the floor door side moves further, the door knife mechanism will pull the connecting rod, and the third connecting piece at the second end of the connecting rod will pull the end of the lock bar until the lock bar is tilted, thereby achieving the purpose of unlocking.

[0007] Preferably, the door knife mechanism comprises a bottom plate, a first gear lever and a second swing lever;

[0008] The first gear lever is connected to the bottom plate through the second swing rod, and the second connecting member is arranged on the first gear lever;

[0009] In an emergency state, the bottom plate moves toward the first gear lever and presses against the first gear lever, and the first gear lever moves upward as a whole along the rotation trajectory of the second swing arm until the first connecting member and the second connecting member cooperate with each other.

[0010] Preferably, the first connecting member is a rib extending toward the bottom plate;

[0011] The second connecting member is a locking strip extending toward the connecting rod.

[0012] Preferably, a retaining edge is provided at the end of the locking bar toward the connecting rod;

[0013] In an emergency state, the connecting rod moves in a direction away from the locking bar, and the third connecting rod and the retaining edge are pressed against each other until the locking bar is pulled up and unlocked.

[0014] Preferably, the door knife mechanism further comprises a top plate pressed against the lock bar;

[0015] In a normal state, the locking bar moves along the belt to one side of the top plate, and the end of the locking bar is pressed against the top plate until the locking bar tilts up and is unlocked.

[0016] Preferably, a first rocker arm for connection and fixation is provided between the connecting rod and the door knife mechanism.

[0017] Preferably, a reset member for resetting the first rocker arm is provided between the first rocker arm and the door knife mechanism.

[0018] Preferably, the connecting rod is provided with a clamping portion for enhancing the clamping effect of the car door.

[0019] Preferably, a magnet is provided on the upper sill of the car door, and the clamping portion extends toward the magnet, and the clamping portion and the magnet are attracted to each other in a closed door state.

[0020] Preferably, the clamping portion is provided with a traction rope, and the traction rope is an elastic rope or a non-elastic rope;

[0021] When the traction rope is an elastic rope, a pull block is provided on the upper sill of the car door, and the two ends of the traction rope are respectively connected to the clamping part and the pull block, and the traction rope is in a tensioned state;

[0022] When the traction rope is a non-elastic rope, a roller is provided on the upper sill of the car door, one end of the traction rope is connected to the clamping part, and the other end of the traction rope is provided with a counterweight block at the end after passing around the roller.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. By separating the connecting rod and the door knife mechanism, under normal working conditions, the connecting rod and the door knife mechanism will not come into contact, so no noise will be generated due to collision; only in an emergency state, when the lock mechanism cannot be unlocked by itself, will the door knife mechanism be combined with the connecting rod by turning the key from the outside, and the lock bar will be pulled to unlock, thereby reducing the noise generated under normal working conditions and greatly improving the comfort of passengers riding the elevator.

[0025] 2. During the debugging process of this solution, since the door knife mechanism and the lock mechanism are separated, there is no direct connection between the door knife mechanism and the lock mechanism. When the door knife mechanism or the lock mechanism itself needs to be adjusted, there is no need to adjust the door knife mechanism and the lock mechanism at the same time. Only the door knife mechanism or the lock mechanism needs to be adjusted separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of a conventional door knife;

[0028] Figure 2 It is a schematic diagram of the elevator door knife door lock device in the closed state of Embodiment 1 and Embodiment 2;

[0029] Figure 3 is a schematic diagram of the locking mechanism;

[0030] Figure 4 It is a schematic diagram of the elevator door knife door lock device embodiment 1 and embodiment 2 in a normal open state;

[0031] Figure 5 It is a schematic diagram of the elevator door knife door lock device embodiment 1 and embodiment 2 in the emergency opening state;

[0032] Figure 6 This is a schematic diagram of the elevator door knife door lock device embodiment 2 in the closed state Figure 1 ;

[0033] Figure 7 This is a schematic diagram of the elevator door knife door lock device embodiment 2 in the closed state Figure 2 ;

[0034] 1. Door knife mechanism; 10. Second connecting piece; 11. Bottom plate; 12. First gear lever; 13. Second swing lever; 14. Top plate; 15. First swing lever; 16. Reset piece; 17. Second gear lever; 18. Fixed roller; 19. Moving roller; 2. Locking mechanism; 20. Locking bar; 21. Locking plate; 22. Belt; 23. Side guard; 3. Emergency unlocking mechanism; 30. Connecting rod; 300. First end; 301. Second end; 302. First connecting piece; 303. Third connecting piece; 31. Clamping part; 310. Traction rope; 311. Pull block; 312. Roller; 313. Counterweight; 314. Magnet; 4. Upper sill of car door; 5. Door hanging plate. DETAILED DESCRIPTION

[0035] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention, and the embodiments described are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present invention.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0037] Example 1

[0038] This solution specifically discloses an elevator door knife door lock device, which includes a door knife mechanism 1, a lock mechanism 2 and an emergency unlocking mechanism 3. Under conventional technology, such as Figure 1 As shown, the emergency unlocking mechanism 3 is fixedly connected to the door knife mechanism 1, and the emergency unlocking mechanism 3 is specifically a connecting rod 30. Therefore, in the normal unlocking process, the first gear rod 12 in the door knife mechanism 1 needs to lift and lower the connecting rod 30 together, and the mass of the first gear rod 12 and the connecting rod 30 is large. Every time the connecting rod 30 and the first gear rod 12 fall quickly, they will collide with the fixed roller 18 to produce a loud sound. This causes noise, which greatly reduces the riding comfort of passengers.

[0039] Therefore, in this solution, the lock mechanism 2, the door knife mechanism 1 and the emergency unlocking mechanism 3 are separated from each other, and the emergency unlocking mechanism 3 is far away from the lock mechanism 2 and the door knife mechanism 1. Figure 2-Figure 4 As shown, in the normal door opening and unlocking state, the locking mechanism 2 connected to the belt 22 will only be tightened against the door knife mechanism 1 until the locking mechanism 2 is unlocked. Specifically, the locking mechanism 2 includes a locking plate 21 and a locking bar 20. The locking plate 21 is installed on the door hanging plate 5 and is connected to the belt 22. The belt 22 drives the locking plate 21 to move horizontally, and a locking bar 20 is installed on the locking plate 21 through a rotating shaft. The locking bar 20 can be tilted up or down along the rotating shaft. When the motor-driven belt 22 starts to move to the left, the lock plate 21 drives the lock bar 20, the bottom plate 11, and the door hanging plate 5 to move to the left, and the second gear lever 17 on the bottom plate 11 gradually hits the moving roller 19. As the car door continues to move to the left, the reaction force of the second gear lever 17 causes the moving roller 19 to move toward the static roller 18 of the landing door, and pushes the second gear lever 17 to the right. The second gear lever 17 and the end of the lock bar 20 will be relatively tight. As the lock plate 21 moves further, the lock bar 20 will be pressed by the door knife mechanism 1 and the front end will be tilted. At this time, the front end of the lock bar 20 can be separated from the lock seat, thereby achieving the unlocking effect. In the normal door opening process, the lock mechanism 2 and the door knife mechanism 1 do not contact the emergency unlocking mechanism 3, so there will be no noise caused by collision, which greatly improves the comfort of passengers.

[0040] And as Figure 5As shown, when the elevator breaks down, the locking mechanism 2 cannot unlock itself. At this time, a key needs to be inserted into the linkage assembly from the outside. The linkage assembly cooperates with the door knife mechanism 1. By turning the key from the outside, the linkage assembly drives the first gear rod 12 of the door knife mechanism 1 to lift up, so that the door knife mechanism 1 and the emergency unlocking mechanism 3 cooperate with each other. The door knife mechanism 1 pulls the emergency unlocking mechanism 3. At the same time, the other end of the emergency unlocking mechanism 3 cooperates with the end of the lock bar 20. When the emergency unlocking mechanism 3 is pulled by the door knife mechanism 1, the emergency unlocking mechanism 3 will also pull the lock bar 20 until the front end of the lock bar 20 is tilted, thereby achieving the purpose of unlocking. Specifically, the emergency unlocking mechanism 3 includes a connecting rod 30, wherein the end of the connecting rod 30 facing the lock bar 20 is a second end 301, and the end facing away from the lock bar 20 is a first end 300, and a first connecting member 302 interlocking with the door knife mechanism 1 is provided on the first end 300, and a second connecting member 10 interlocking with the first connecting member 302 is provided on the door knife mechanism 1, and a third connecting member 303 interlocking with the end of the lock bar 20 is provided on the second end 301. During emergency unlocking, the key is rotated, which causes the first gear lever 12 of the door knife mechanism 1 to be lifted, and specifically, the second connecting member 10 on the door knife mechanism 1 will contact and interlock with the first connecting member 302 on the connecting rod 30, and at this time, the door knife mechanism 1 and the connecting rod 30 are combined into one. As the door continues to move, the door knife mechanism 1 will pull the connecting rod 30 to move in a direction away from one end of the lock bar 20. As the connecting rod 30 moves until the third connecting member 303 contacts the end of the lock bar 20, when the connecting rod 30 moves further, the third connecting member 303 can press against the end of the lock bar 20 and pull the end of the lock bar 20. As the third connecting member 303 pulls, the lock bar 20 will move along the rotating shaft until the lock bar 20 is completely tilted away from the lock seat, and the unlocking in an emergency state can be completed. Specifically, in order to allow the third connecting member 303 to better cooperate with the end of the lock bar 20, a retaining edge 23 is provided at the end of the lock bar 20 toward the connecting rod 30; in an emergency, the connecting rod 30 moves in a direction away from the lock bar 20, and the third connecting member 303 can move the retaining edge 23, so that the lock bar 20 rotates along the rotating shaft until the lock bar 20 is tilted and unlocked. It should be noted that in this working state, due to the emergency situation, there is no need to consider the problem of noise generation.

[0041] Specifically, it is necessary to explain in detail the working process of the door knife mechanism 1 and the connecting rod 30, wherein the door knife mechanism 1 includes a base plate 11, a first gear rod 12 and a second rocker rod 13. First, the first gear rod 12 is vertically arranged with the car door sill 4, and the upper end of the first gear rod 12 cooperates with the car door sill 4 through the "L" connecting piece above the car door sill 4, so that the first gear rod 12 can move along the car door sill 4, and the lower end of the first gear rod 12 is connected to the base plate 11 through the second rocker rod 13. In an emergency, insert the key from the outside and push the floor door, and the fixed roller 18 drives the first gear rod 12 to move upward as a whole along the rotation trajectory of the second rocker rod 13. As the floor door continues to be pushed, until the first connecting piece 302 and the second connecting piece 10 cooperate with each other, the connecting rod and the first gear rod 12 are connected as a whole.

[0042] In some optional embodiments, a top plate 14 is further provided on the side of the door knife mechanism 1 facing the lock bar 20, and the height of the top plate 14 is opposite to the lower side of the end of the lock bar 20; in the normal unlocking state, the motor will drive the belt 22 to move laterally, and at this time, the lock plate 21 connected to the belt 22 will also be moved by the belt 22 toward the side of the lock bar 20 until the end of the lock bar 20 contacts the top plate 14. As the belt 22 moves further, the end of the lock bar 20 and the top plate 14 are pressed against each other, and the end of the lock bar 20 is subjected to pressure, so that the lock bar 20 as a whole can rotate along the rotating shaft until the lock bar 20 is tilted up and unlocked.

[0043] In some optional embodiments, in order to ensure that the connecting rod 30 is away from the door knife mechanism 1 and the locking mechanism 2 when the door is normally opened, the connecting rod 30 and the door knife mechanism 1 are separated by a distance by providing a first swing rod 15, and are connected through the first swing rod 15. During normal operation, the door knife mechanism 1 can move along the swing direction of the first swing rod 15 to avoid interference with the connecting rod 30.

[0044] In some optional embodiments, a reset member 16 for resetting the first swing rod 15 is provided between the first swing rod 15 and the door knife mechanism 1. During normal operation, the relative positions of the connecting rod 30 and the door knife mechanism 1 will change. In order to enable the relative positions of the connecting rod 30 and the door knife mechanism 1 to return to the initial position after the work is completed, a reset member 16 is provided, specifically a guide rod outer sleeve spring, one end of the guide rod is connected to the first swing rod 15, and the other end is rotatably connected to the bottom plate 11. When the swing arm rotates, the guide rod can slide along the bottom plate 11. Therefore, when the relative position of the connecting rod 30 and the door knife mechanism 1 changes, the position of the connecting rod 30 and the door knife mechanism 1 will also change. At this time, the reset member 16 will produce elastic deformation. When the work is completed, the reset member 16 will elastically recover, thereby pulling or pushing the first swing rod 15 back to the initial position, and then driving the connecting rod 30 and the door knife mechanism 1 back to the initial position.

[0045] Example 2

[0046] In order to keep the car door closed during normal operation, the driving mechanism needs to drive the car doors on both sides to push inwards to prevent the car doors from opening automatically due to lack of clamping force during operation. However, if the car door needs to be clamped at all times, power will be consumed all the time. If the driving mechanism needs to be kept running during periods of low elevator usage, it will waste power and reduce the life of the motor.

[0047] In order to solve the above problems, Figure 5 As shown, the connecting rod 30 is provided with a clamping part 31 for enhancing the clamping effect of the car door. In order to cooperate with the clamping part 31, a magnet 314 is provided on the upper sill 4 of the car door. The clamping part 31 extends in the direction of the magnet 314. In the closed door state, the clamping part 31 and the magnet 314 are mutually attracted. In this way, the car door is clamped inward by an inward clamping force, and the car door will not open automatically even if the driving mechanism is suspended. Therefore, when the car is unused for a long time (the elevator is in standby state), the driving mechanism can be suspended in the closed door state, and the clamping part 31 clamps the car door. When someone calls the elevator, the driving mechanism restarts and the elevator resumes normal operation.

[0048] In summary, during periods when the elevator is used more frequently, the car door is clamped mainly by the driving mechanism. During periods when the elevator is used less frequently and no one is using it, the car door is clamped mainly by the clamping part 31 and the driving mechanism stops working. In this way, the power consumption of the elevator can be greatly reduced, achieving the purpose of saving energy.

[0049] In some optional embodiments, the magnet 314 is not provided on the car door sill 4, but instead a traction rope 310 is provided on the clamping portion 31, and the traction rope 310 is an elastic rope or a non-elastic rope.

[0050] When the traction rope 310 is an elastic rope, Figure 6 As shown, a pull block 311 is provided on the upper sill 4 of the car door, and both ends of the traction rope 310 are respectively connected to the clamping part 31 and the pull block 311. The traction rope 310 is in a tensioned state. Therefore, when the driving mechanism is suspended, the traction rope 310 can ensure that the car door is always clamped inward by tightening the pull block 311.

[0051] When the traction rope 310 is a non-elastic rope, such as Figure 7As shown, a roller 312 is provided on the upper sill 4 of the car door, one end of the traction rope 310 is connected to the clamping part 31, and a counterweight block 313 is provided at the end of the other end of the traction rope 310 after it passes around the roller 312. The counterweight block 313 is used to pull the traction rope 310 downward under the action of gravity. The traction rope 310 passes around the roller, which can provide a lateral pulling force for the clamping part 31 to ensure that the car door can be clamped inward.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An elevator door knife door lock device, It is characterized in that include: Door knife mechanism, lock mechanism and emergency unlocking mechanism; The door knife mechanism is installed on the upper sill of the car door and can provide a lateral driving force; The lock mechanism includes a lock plate and a lock bar, wherein the lock plate is mounted on the door hanging plate and connected to a belt that moves laterally, and the lock bar is rotatably connected to the lock plate; during the movement of the lock plate and the door knife mechanism, the end of the lock bar and the door knife mechanism can be driven to approach each other until the lock bar is tilted and unlocked; The emergency unlocking mechanism includes a connecting rod; The connecting rod is arranged above the door blade mechanism and the locking bar, and the two ends of the connecting rod are respectively a first end and a second end; The first end portion is provided with a first connecting member interconnected with the door knife mechanism, and the door knife mechanism is provided with a second connecting member cooperating with the first connecting member, and the door knife mechanism can make the first connecting member and the second connecting member cooperate by moving toward the connecting rod; the second end portion is provided with a third connecting member that can pull the end of the locking strip.

2. The elevator door knife door lock device according to claim 1, It is characterized in that The door knife mechanism includes a bottom plate, a first gear lever and a second swing lever; The first gear lever is connected to the bottom plate via the second swing rod, and the second connecting member is arranged on the first gear lever; In an emergency state, the bottom plate moves toward the first gear lever and presses against the first gear lever, and the first gear lever moves upward as a whole along the rotation trajectory of the second swing arm until the first connecting member and the second connecting member cooperate with each other.

3. The elevator door knife door lock device according to claim 2, It is characterized in that The first connecting member is a rib extending toward the bottom plate; The second connecting member is a locking strip extending toward the connecting rod.

4. The elevator door knife door lock device according to claim 1, It is characterized in that The end of the locking bar is provided with a rib towards the connecting rod; In an emergency state, the connecting rod moves in a direction away from the locking bar, and the third connecting rod and the retaining edge are pressed against each other until the locking bar is pulled up and unlocked.

5. The elevator door knife door lock device according to claim 1, It is characterized in that The door knife mechanism also includes a top plate pressed against the lock bar; In a normal state, the locking bar moves along the belt to one side of the top plate, and the end of the locking bar is pressed against the top plate until the locking bar tilts up and is unlocked.

6. The elevator door knife door lock device according to claim 1, It is characterized in that A first swing rod for connecting and fixing is provided between the connecting rod and the door knife mechanism.

7. The elevator door knife door lock device according to claim 6, It is characterized in that A reset component for resetting the first swing rod is provided between the first swing rod and the door knife mechanism.

8. The elevator door knife door lock device according to claim 1, It is characterized in that The connecting rod is provided with a clamping portion for enhancing the clamping effect of the car door.

9. The elevator door knife door lock device according to claim 8, It is characterized in that A magnet is arranged on the upper sill of the car door, and the clamping portion extends toward the magnet. When the door is closed, the clamping portion and the magnet are attracted to each other.

10. The elevator door knife door lock device according to claim 8, It is characterized in that The clamping portion is provided with a traction rope, and the traction rope is an elastic rope or a non-elastic rope; When the traction rope is an elastic rope, a pull block is provided on the upper sill of the car door, and the two ends of the traction rope are respectively connected to the clamping part and the pull block, and the traction rope is in a tensioned state; When the traction rope is a non-elastic rope, a roller is provided on the upper sill of the car door, one end of the traction rope is connected to the clamping part, and the other end of the traction rope is provided with a counterweight block at the end after passing around the roller.

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